Carl saiiler



(No Model.)

- G SAHLER OUPOLA FURNACE.

a a1 a m W w u w a UNITED STATES PATENT OFFICE.

CARL SAIILER, OF QOLOGNE-ON-THE-RIIINE, GERMANY, ASSIGNOR TO F. A. IIERBERTZ, OF SAME PLACE.

CUPOLA-FURNACE.

SPECIFICATION forming part of Letters Patent No. 468,306, dated February 2, 1892.

Application filed July 23, 1891. Serial 110,400,508- (No model.) Patented in Germany August 11, 1890, No. 56,205.

To all whom it may concern:

Be it known that I, CARL SAHLER, a subject of the King of Prussia, residing at Cologneon-the-Rhine, in the German Empire, have invented certain new and useful Improvements in Cupola-Furnaces, (for which I have received Letters Patent in Germany, No. 56,205, dated August 11, 1890,) of which the following is a specification.

IO This invention relates to certain improvements in cupola-furnaces; and it consists in certain novel features of construct-ion and in combinations of parts more fully described hereinafter, and particularly pointed out in [5 the claims.

Referring to the drawings, Figure 1 is a central vertical section of the improved furnace. Fig. 2 is a detail sectional view taken in plane of line Z Z, Fig. 3. Fig. 3 is a detail sectional view taken in plane of line Y Y, Fig. 2. Fig. i is a cross-sectional view taken on line 4. 4, Fig. 1.

This smelting-furnace, which is operated by the suction of. a steam-jet or a ventilator, is

2 5 used for smelting ores and resinelting the resultant metallic products.

The furnace consists of the shaft S and the water-cooling jackets IV and V',the portable and adjustable hearth II, and the exhaust A with the steam-jet I. The shaft S is provided at its top with hopper g and bell 71., surrounded by a water-jacket or other suitable casing a. The shaft S is carried freely by means of the columns T and the supporting-ring C, or the c 5 ring 0 is supported upon double T-standards.

The water-cooling jackets W and IV are carried by bands Z and Z, which are supported by bolts 1) and b, secured to the ring 0. By means of the nuts 12 and b the water- 0 cooling jackets \V and W may be raised and lowered. By this arrangement two ringshaped adjustable air-ducts L and L are formed, one betweenthe hearth II and the lower cooling-jacket XV and the other between .5 the two jackets IV and W. As soon as the jet I is in operation 111 the exhaust A air enters the ducts L and L to assist the combustion.

In order to admit air to the center of the shaft as well as to its periphery, the lower water-jacket I is contracted so as to form with the hearth II an air-duct L, of annular shape and correspondingly smaller diameter than L.v From this arrangement it is clear that the air entering at L must be directed more toward the center of the shaft than that entering at L.

In smelting more or less pulverized ores the part R of the air-injector is apt to become clogged, and therefore it must be readily interchangeable during the working. The re movable pipe-section R is surrounded by the casing on, having normally-closed ends, as shown, to form a tight joint and hold the parts in position, as the section R is removable.

In order to prevent overheating of the steampipe 0' in the exhaust, the steam is admitted at both ends 6 and 6, Figs. 2 and 3, and thus the whole pipe is continually filled with steam. The j et-pipe r is made in one piece, and is removable and interchangeable. The jet r is regulated by means of nuts m and m.

In order to make the furnace serviceable for distant and mountainous regions, it is made to be taken apart in pieces of not over two hundred pounds weight, so as to be transported on the backs of mules. For this purpose the sheet metal of the casing is not riveted together, but is put together with screws, and further the water-cooling jackets IV and So IV are each made of eight sections or waterboxes, and the exhaust A is made of a series of sleeves which fit each other, while the standards T are made of two U shaped beams screwed together and provided with base and 8 5 cap pieces.

I claim- 1. In a cupola-furnace, the combination of the shaft, supports therefor, a hearth, the separate ring-shaped water-jackets between the 0 hearth and the lower end of the shaft, the lower jacket having a smaller internal diameter than the upper jacket, and supports for said jackets, so that they are held separated to form the annular air-inlets between them- 9 5 selves and between the lower ring and the hearth, as set forth.

2. In a cupolafurnace, the combination of the shaft, the hearth, and the ring-shaped water-jackets between the hearth and shaft and forming a part of the shaft, said jackets being separated, as shown, to form an annu lar air-supply space between themselves and between the lower jacket and the hearth, as shown, supports for the shaft, and separate supports for the said jackets holding them in vertical adjustment, so that they can be adj usted vertically to vary the size of the annular air-inlets, substantially as described.

3. In a cupola-furnace, the combination of the shaft, the hearth, the supporting-standards for the shaft, the ring-shaped waterjackets between the hearth and shaft, each jacket composed of a number of radial sections removably secured together, said jackets being separated to form the annular airinlets, the depending supporting-rods from the shaft having threaded portions, and arms rigid with said jackets and supported by nuts on said rods, whereby the jackets can be vertically adjusted, as set forth.

4. In a cupola-furnace, the combination of the vertical shaft having air-inlets at its bottom, the exhaust from its upper end, composed of a series of sleeves removably fitting one into the other, the removable jet-pipe transversely located in said exhaust with steamopenings into both ends, and the removable section R beneath said jet, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

CARL SAHLER.

WVitnesses:

T. P. XVALLENBORG, OTTO BRAEGER. 

